As it literally means Yeganeh is unique, sole, one and only one. If you find her do not lose her. She is one of a kind and kind as in kind, sweet and caring. When it comes to honesty she has it all. Her natural wisdom, intelligence, grace and beauty would make any man the luckiest of all.
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.